<template>
  <div>
    <!-- 面包屑导航 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>数据统计</el-breadcrumb-item>
      <el-breadcrumb-item>数据报表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片视图区域 -->
    <el-card>
      <div id="main" style="width: 800px; height: 600px"></div>
    </el-card>
  </div>
</template>

<script>
// 导入echarts
import * as echarts from 'echarts'

// 按需导入请求
import { getReportsApi } from '@/api/reports.js'

// 导入lodash
import _ from 'lodash'

export default {
  name: 'Reports',
  data() {
    return {
      options: {
        title: {
          text: '用户来源'
        },
        tooltip: {
          trigger: 'axis',
          axisPointer: {
            type: 'cross',
            label: {
              backgroundColor: '#E9EEF3'
            }
          }
        },
        grid: {
          left: '3%',
          right: '4%',
          bottom: '3%',
          containLabel: true
        },
        xAxis: [
          {
            boundaryGap: false
          }
        ],
        yAxis: [
          {
            type: 'value'
          }
        ]
      }
    }
  },
  created() {},
  mounted() {
    // 基于准备好的dom，初始化echarts实例
    var myChart = echarts.init(document.getElementById('main'))

    // 直接调用数据报表请求
    getReportsApi().then((res) => {
      this.options = _.merge(res.data.data, this.options)
      // 使用刚指定的配置项和数据显示图表。
      myChart.setOption(this.options)
    })
  }
}
</script>

<style lang="less" scoped>
.el-card {
  margin-top: 15px;
}
</style>
